Issue #2790 - Part 3: Address BZ bug 1849122 and resolve build issues

dom/base/Element.h

@@ -1603,6 +1603,16 @@ private:
 
   // Data members
   EventStates mState;
+
+public:
+  // Public helper to add or remove event states
+  void SetEventState(mozilla::EventStates aState, bool aAdd) {
+    if (aAdd) {
+      this->AddStates(aState);
+    } else {
+      this->RemoveStates(aState);
+    }
+  }
 };
 
 class RemoveFromBindingManagerRunnable : public mozilla::Runnable

dom/base/nsDOMWindowUtils.cpp

@@ -4067,7 +4067,11 @@ nsDOMWindowUtils::AddElementEventState(nsIDOMElement* aElement, uint64_t aState)
   if (!content) {
     return NS_ERROR_INVALID_ARG;
   }
-  content->AddStates(mozilla::EventStates(aState));
+  mozilla::dom::Element* element = static_cast<mozilla::dom::Element*>(content.get());
+  if (!element) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  element->SetEventState(mozilla::EventStates(aState), true);
   return NS_OK;
 }
 
@@ -4079,6 +4083,10 @@ nsDOMWindowUtils::RemoveElementEventState(nsIDOMElement* aElement, uint64_t aSta
   if (!content) {
     return NS_ERROR_INVALID_ARG;
   }
-  content->RemoveStates(mozilla::EventStates(aState));
+  mozilla::dom::Element* element = static_cast<mozilla::dom::Element*>(content.get());
+  if (!element) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  element->SetEventState(mozilla::EventStates(aState), false);
   return NS_OK;
 }

dom/base/nsDOMWindowUtils.h

@@ -63,8 +63,6 @@ public:
   explicit nsDOMWindowUtils(nsGlobalWindow *aWindow);
   NS_DECL_ISUPPORTS
   NS_DECL_NSIDOMWINDOWUTILS
-  NS_IMETHOD AddElementEventState(nsIDOMElement* aElement, uint64_t aState) override;
-  NS_IMETHOD RemoveElementEventState(nsIDOMElement* aElement, uint64_t aState) override;
 
 protected:
   ~nsDOMWindowUtils();

toolkit/components/formautofill/FormAutofillContentService.js

@@ -31,6 +31,19 @@ function FormHandler(aForm, aWindow) {
   this.window = aWindow;
 
   this.fieldDetails = [];
+
+  // Add a reset event listener to clear autofill state
+  this.form.addEventListener("reset", () => {
+    console.log('Form reset detected, clearing autofill state');
+    for (let element of this.form.elements) {
+      if (typeof element.setAutofilled === "function") {
+        element.setAutofilled(false);
+        console.log('setAutofilled(false) called on', element);
+      }
+    }
+    // Optionally, clear fieldDetails if you want to force re-collection
+    // this.fieldDetails = [];
+  });
 }
 
 FormHandler.prototype = {